Nanno is a character from the Thai television anthology series "Girl from Nowhere"). She is an immortal being who disguises herself as a young female student and transfers to different school establishments to expose hypocrisy. Nannos true identity is a mystery, and there are several theories about who or what she might be. Some of the most popular theories include:

• Daughter of Satan: According to redditors, the name "Nanno" translates to "daughter of the devil" or "Satans spawn".

• Human embodiment of karma: A running theme in every episode of "Girl from Nowhere" seems to be that every player in each equation receives an equal consequence for their actions. This could suggest that Nannos identity is inextricably linked to the idea of karma.

• Temptation incarnate: Nanno targets the most conniving, hypocritical, or unempowered members of school and gives them the tools to execute their vision. However, things don’t always turn out the way they expect. The fact that Nanno doesn’t necessarily pressure her targets into doing anything further adds to the theory that she is but a facilitator of people’s desires.

• Manifestation of peoples dark sides: Perhaps Nanno doesn’t actually exist but is, in fact, a manifestation of people’s dark sides. This theory comes into play in "Thank You Teacher," where Nanno plays a relatively minor role in the teachers’ decisions.

Overall, Nanno is a complex and intriguing character whose true nature remains shrouded in mystery.